Key-fastener



- F. J. OUDIN.

KEY ASTENER.

v Patented Jan. 9, 1894.

N f x I WITNESSES f v n A P m: mmomu umcsmmma wAamr-qrou n UNITED STATESPATENT OFFICE.

FREDRICK J. LOUDIN, OF RAVENNA, OHIO.

KEY-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 512,308, dated January9, 1894.

Application filed February 23. 1898- Serial No. 463,359- (No model.)

This invention relates to key-fasteners.

which are attached to the knob-shaft or doorhandle above the key-holeand engage with the eyed-end of the key to keep it from being turned inthe lock/ The object of the invention is to provide a spring-actuatedplate with an open recess to received the eyed-end of the key, and tosuspend said plate from the door-handle by a spring in a manner that theplate may be carried toward the door against a spring resistance, wheninserting the key through it and into the lock, whereby the tendency ofthe plate to spring back establishes and preserves an engagement of theeyed-end of the key with the plate-recess. I

Another object is to lock the eyed-end of the key in the recess of theplate, by means of a slide having vertical bearings in said plate, andalso to cover the key-hole in the plate with said slide.

In the drawings forming a part of this specification, Figure 1 is aperspective view, showing the key in connection with the fastener; andFig. 2 is an elevation, showing the door, and parts of the key andfastener, in vertical section.

Referring to the lettered parts of the drawings, A represents the door,and B the knobshaft above the key-hole. The plate, D, has an openrecess, e, in the front face and transversely thereto, and open eyes, a,at each side on the back face, and also a central key-hole, F, leading.from the open recess, e, through the plate, a portion of which key-holeis indicated by dotted lines in Fig. 1. This plate, D, is suspended fromthe shaft, B, by an elastic metal wire, bent upon itself to form a loopat the top, which is placed on the shaft B. Be-.

low this loop the wire is formed into spirals, E, which rest against thedoor, and from and caught onto the plate.

thence extends downward, terminating in two free ends which aredetachably caught in the open eyes, c, of the plate, D, thusconstituting a spring, I, which suspends the plate.

At J is a slide, which has vertical bearings in the plate D. This slidepassesdown through the eyed-end of the key, thus locking the eyed: endof the key in said recess, so that the plate cannot bedrawn toward thedoor to disengage said eyed-end of the key from the recess, whichotherwise might be done by a burglar from the outside of the door withsome suitable implement, inserted through the key-hole It will beobserved that this slide also oovers the key-hole in the plate D,'makingit impossible to see through the k'ey-hole from the outside.

In the operation, the spring, I, is detached from the open eyes, 0, ofthe plate D, then placed over the knob-shaft and again attached to theplate D. The key, H, is then inserted through the hole, F, in the plateand said plate is borne toward the door against a spring resistance,until the door is locked, at which time said plate is released, when thereaction of the spring carries the plate back until the open recess, e,receives the eyed-end of the key, the shoulders of said recesspreventing any possibility of the key being turned in the look from theoutside.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent of the United States, is=- 1. A key-fastenercomprising a plate having the recess in the front face and a spring forsuspending the plate from the knob-shaft or door-handle; substantiallyas set forth.

2. A key-fastener comprising a spring for attachment to the knob-shaftor door-handle, a plate provided with the front recess and the rear openeyes for detachable attachment with the ends of said spring;substantially as set forth.

3. A key-fastener comprising a plate having the recess in the frontface, and a keyhole leading from said recess through the plate, a slideadapted to pass down through the eyed-end of the key, and a spring forsusand preserving an engagement of the recess pending said plate fromthe knob-shaft or with the eyed-end of the key; substantiallydoor-handle; substantially as set forth. as set forth.

4. The combination of aknob-shaft or door- In testimony to the foregoingI have here- 5 handle, a key, a spring-actuated plate susunto subscribedmy name in the presence of r 5 pended from said knob-shaft ordoor-handle, two witnesses.

said plate being provided with the recess and FREDRIOK J. LOUDIN.key-hole, whereby the plate is carried toward Witnesses: the door, inthe act of locking, against a spring 0. A. MYERS,

1o resistance, and the reaction thereof causing W. E. GOODRICH.

